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Low

OpenClaw Vulnerable to HTML injection via unvalidated image MIME type in data-URL interpolation

  • Disclosed: 03.03.2026
  • Updated: 11.10.2026 10:22

Summary

The HTML session exporter (src/auto-reply/reply/export-html/template.js) interpolates img.mimeType directly into <img src="data:..."> attributes without validation or escaping. A crafted mimeType value (e.g., x" onerror="alert(1)) can break out of the attribute context and execute arbitrary JavaScript.

Impact

An attacker who can control image entries in session data (via crafted tool results or session manipulation) can achieve XSS when the exported HTML is opened. The precondition is tighter than the main XSS finding (requires image content blocks with a malicious mimeType), but exploitation is straightforward.

Affected components

  • src/auto-reply/reply/export-html/template.js — line 1032 (tool result images), line 1306 (user message images)

Reproduction

  1. Craft a session entry with an image content block where mimeType is set to image/png" onerror="alert(document.domain)
  2. Export the session to HTML
  3. Open the exported HTML — the injected onerror fires

Remediation

  • Added sanitizeImageMimeType() helper that validates mimeType against a whitelist of known image MIME types
  • Falls back to application/octet-stream for unrecognized values, preventing attribute breakout

Fix

https://github.com/openclaw/openclaw/pull/24140

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package openclaw < 2026.2.23 2026.2.23

References

CVSS score 4.6/10
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-79
Platform
npm
Package
openclaw
Disclosed
03.03.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-2ww6-868g-2c56 - CC BY 4.0

Vulnerability history: openclaw

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (588) in the archive
Total entries
588
First → latest
02.2026 07.2026
Without a fix
9
Exploited in attacks
0

Severity breakdown

  • Critical 20
  • High 215
  • Medium 299
  • Low 54

Disclosures per year

Severity:
  1. OpenClaw Vulnerable to HTML injection via unvalidated image MIME type in data-URL interpolation this entry
    Low · 4.6 CVE-2026-32040 < 2026.2.23 2026.2.23
  2. OpenClaw: Native command authorization could skip owner-command enforcement
    High CVE-2026-53828 < 2026.5.6 2026.5.6
  3. OpenClaw: PowerShell encoded-command aliases could miss exec allowlist checks
    High · 8.8 CVE-2026-53836 < 2026.5.12 2026.5.12
  4. OpenClaw: Trusted retry endpoint checks could match hostname prefixes
    High CVE-2026-53839 < 2026.5.7 2026.5.7
  5. OpenClaw: Telegram interactive callbacks could skip commands.allowFrom
    High CVE-2026-53807 < 2026.5.6 2026.5.6
  6. OpenClaw: Matrix allowFrom could bind to mutable display names
    High · 8.8 CVE-2026-53811 < 2026.5.7 2026.5.7
  7. OpenClaw: Paired nodes could forge exec lifecycle events without system.run provenance
    High · 7.2 CVE-2026-53816 < 2026.5.18 2026.5.18
  8. OpenClaw: Combined POSIX shell options could confuse exec revalidation
    High · 8.8 CVE-2026-53806 < 2026.5.12 2026.5.12
  9. OpenClaw: Fake package roots could influence memory-core artifact loading
    High · 7.8 CVE-2026-53813 < 2026.4.25 2026.4.25
  10. OpenClaw: Workspace .env could override Homebrew executable selection for skill install flows
    High · 8.8 CVE-2026-53819 < 2026.5.27 2026.5.27
  11. OpenClaw: QQBot pre-dispatch slash commands could skip allowFrom checks
    High · 7.5 CVE-2026-53834 < 2026.4.27 2026.4.27
  12. OpenClaw: Non-owner chat senders could issue device-pairing bootstrap codes
    High · 8.3 CVE-2026-32905 < 2026.5.4 2026.5.4
  13. OpenClaw: QQBot admin commands could skip DM-only and allowFrom policy
    Critical CVE-2026-34507 < 2026.4.29 2026.4.29
  14. OpenClaw: Trusted-proxy Control UI WebSocket accepted client-declared scopes before pairing
    High · 8.8 CVE-2026-53821 < 2026.5.18 2026.5.18
  15. OpenClaw: Slack allowFrom could bind to mutable display names
    High CVE-2026-53823 < 2026.5.3 2026.5.3
  16. OpenClaw: QQBot streaming command could mutate config without explicit allowFrom
    High · 7.7 CVE-2026-53833 < 2026.4.29 2026.4.29
  17. OpenClaw: Scoped chat.send route inheritance could bypass admin command scope gates
    High · 8.8 CVE-2026-35674 < 2026.5.18 2026.5.18
  18. OpenClaw's POSIX node system.run safe-bin allowlist could be widened by shell expansion
    High · 7.1 CVE-2026-53831 < 2026.5.18 2026.5.18
  19. OpenClaw: QQBot native approval buttons did not enforce configured approver identity
    High · 8.0 CVE-2026-35630 < 2026.5.18 2026.5.18
  20. OpenClaw: Hook-triggered CLI runs could receive owner MCP tool authority
    High · 8.4 CVE-2026-53814 < 2026.5.20 2026.5.20
  21. OpenClaw: Control UI locality spoofing could mint a durable admin device token
    High · 8.0 CVE-2026-53817 < 2026.5.22 2026.5.22
  22. OpenClaw: Same-host trusted-proxy deployments could accept local forged identity headers
    High · 7.7 CVE-2026-53832 < 2026.5.18 2026.5.18
  23. OpenClaw's marketplace runtime extension metadata could point at unscanned payloads
    High · 8.8 CVE-2026-53810 < 2026.5.18 2026.5.18
  24. OpenClaw: Shell wrapper argv could change between approval and execution
    High CVE-2026-53822 < 2026.5.18 2026.5.18
  25. OpenClaw: Exec approval display truncation could hide the command being approved
    High · 8.0 CVE-2026-53829 < 2026.5.18 2026.5.18
  26. OpenClaw: Message read actions could skip channel allowlist checks
    High · 6.5 CVE-2026-53815 < 2026.5.19 2026.5.19
  27. OpenClaw: Workspace-derived service PATH could influence trash command selection
    High · 7.1 CVE-2026-53865 < 2026.5.2 2026.5.2
  28. OpenClaw: Workspace .env STATE_DIRECTORY could influence bundled runtime dependency roots
    High · 7.1 CVE-2026-53858 < 2026.5.2 2026.5.2
  29. OpenClaw: Discord allowFrom could bind to mutable display names
    High · 8.1 CVE-2026-53849 < 2026.5.7 2026.5.7
  30. OpenClaw: Workspace .env npm_execpath could influence bundled runtime dependency install
    High · 7.1 CVE-2026-53846 < 2026.4.29 2026.4.29
  31. OpenClaw: Linux and macOS exec allowlists skipped configured argument patterns
    High · 7.1 CVE-2026-53853 < 2026.5.12 2026.5.12
  32. OpenClaw: Zalo allowFrom could bind to mutable display names
    High · 8.1 CVE-2026-53857 < 2026.5.3 2026.5.3
  33. OpenClaw: Shell positional parameters could weaken strict inline-eval checks
    High · 8.1 CVE-2026-53855 < 2026.4.2 2026.4.2
  34. OpenClaw: Workspace .env CLOUDSDK_PYTHON could influence Gmail setup gcloud execution
    High · 7.1 CVE-2026-53842 < 2026.5.2 2026.5.2
  35. OpenClaw: Shell inline-command parsing could miss an allowlist check
    High · 8.1 CVE-2026-53866 < 2026.5.12 2026.5.12
  36. OpenClaw: Pairing-scoped device session could restore revoked node token authority
    High · 8.8 CVE-2026-53843 < 2026.5.26 2026.5.26
  37. OpenClaw: Host environment sanitizer missed two Node.js control variables
    High · 8.1 CVE-2026-53864 < 2026.5.26 2026.5.26
  38. OpenClaw: MCP Streamable HTTP redirects could forward configured custom headers to another origin
    High · 7.1 CVE-2026-53840 < 2026.5.12 2026.5.12
  39. OpenClaw's gateway config mutation guard allowed unsafe model-driven config writes
    High · 8.8 CVE-2026-45006 < 2026.4.23 2026.4.23
  40. OpenClaw vulnerable to arbitrary code execution via attacker-controlled setup-api.js loaded from cwd during env-key resolution
    High · 7.8 CVE-2026-45004 < 2026.4.23 2026.4.23
  41. OpenClaw: MCP loopback owner context is derived from server-issued bearer tokens
    High · 7.8 CVE-2026-44118 < 2026.4.22 2026.4.22
  42. OpenClaw: Workspace dotenv could override runtime-control environment variables
    High · 7.8 CVE-2026-44114 < 2026.4.20 2026.4.20
  43. OpenClaw: Feishu webhook and card-action validation now fail closed
    Critical · 9.8 CVE-2026-44109 < 2026.4.15 2026.4.15
  44. OpenClaw: Gateway HTTP endpoints re-resolve bearer auth after SecretRef rotation
    Critical · 8.1 CVE-2026-43585 < 2026.4.15 2026.4.15
  45. OpenClaw: QQBot media tags could read arbitrary local files through reply text
    High CVE-2026-43533 < 2026.4.10 2026.4.10
  46. OpenClaw: busybox and toybox applet execution weakened exec approval binding
    High · 8.8 CVE-2026-43530 >= 2026.2.23, < 2026.4.12 2026.4.12
  47. OpenClaw: Matrix profile config persistence was reachable from operator.write message tools
    High · 6.5 CVE-2026-42433 < 2026.4.10 2026.4.10
  48. OpenClaw: Sandboxed agents could escape exec routing via host=node override
    High · 8.8 CVE-2026-42434 >= 2026.4.5, < 2026.4.10 2026.4.10
  49. OpenClaw: Workspace provider auth choices could auto-enable untrusted provider plugins
    High · 8.8 CVE-2026-43569 < 2026.4.9 2026.4.9
  50. OpenClaw: Sandbox browser CDP relay could expose DevTools protocol on 0.0.0.0
    High CVE-2026-43581 < 2026.4.10 2026.4.10
  51. OpenClaw: Channel setup catalog lookups could include untrusted workspace plugin shadows
    High · 8.8 CVE-2026-43571 < 2026.4.10 2026.4.10
  52. OpenClaw: Exec environment denylist missed high-risk interpreter startup variables
    High · 8.8 CVE-2026-43584 < 2026.4.10 2026.4.10
  53. OpenClaw: Voice-call realtime WebSocket accepted oversized frames
    High · 7.5 CVE-2026-42437 >= 2026.4.9, < 2026.4.10 2026.4.10
  54. OpenClaw: config.get redaction bypass through sourceConfig and runtimeConfig aliases
    High CVE-2026-43528 < 2026.4.14 2026.4.14
  55. OpenClaw: `fetchWithSsrFGuard` replays unsafe request bodies across cross-origin redirects
    High CVE-2026-40037 < 2026.4.8 2026.4.8
  56. OpenClaw: Node Pairing Reconnect Command Escalation Bypasses operator.admin Scope Requirement
    High · 7.8 CVE-2026-42432 < 2026.4.8 2026.4.8
  57. OpenClaw: HGRCPATH, CARGO_BUILD_RUSTC_WRAPPER, RUSTC_WRAPPER, and MAKEFLAGS missing from exec env denylist — RCE via build tool env injection (GHSA-cm8v-2vh9-cxf3 class)
    High CVE-2026-42427 < 2026.4.8 2026.4.8
  58. OpenClaw: Authenticated `/hooks/wake` and mapped `wake` payloads are promoted into the trusted `System:` prompt channel
    High ghsa-jf56-mccx-5f3f < 2026.4.8 2026.4.8
  59. OpenClaw: Lower-trust background runtime output is injected into trusted `System:` events, and local async exec completion misses the intended `exec-event` downgrade
    High ghsa-gfmx-pph7-g46x < 2026.4.8 2026.4.8
  60. OpenClaw: Gateway operator.write Can Reach Admin-Class Telegram Config and Cron Persistence via send
    High · 7.1 CVE-2026-41359 < 2026.3.28 2026.3.28
  61. OpenClaw Has Incomplete Fix for CVE-2026-4039: CLI Backend Environment Variable Injection via Workspace Config
    High · 7.8 CVE-2026-41384 < 2026.3.24 2026.3.24
  62. OpenClaw: Gemini OAuth exposed the PKCE verifier through the OAuth state parameter
    High CVE-2026-34511 < 2026.4.2 2026.4.2
  63. OpenClaw: macOS Tailnet DNS Spoofing & Credential Exfiltration
    High CVE-2026-41393 < 2026.3.31 2026.3.31
  64. OpenClaw: Unbound bootstrap setup codes allow privilege escalation during pairing
    High · 9.8 CVE-2026-41386 < 2026.3.22 2026.3.22
  65. OpenClaw: Node browser proxy `allowProfiles` bypass through persistent profile mutation and runtime profile selection
    High CVE-2026-41353 < 2026.3.22 2026.3.22
  66. OpenClaw: Paired node escalates to gateway RCE via unrestricted node.event agent dispatch
    High · 8.8 CVE-2026-41378 < 2026.3.31 2026.3.31
  67. OpenClaw: Sandbox escape via TOCTOU race in remote FS bridge readFile
    Critical · 8.2 CVE-2026-41296 < 2026.3.31 2026.3.31
  68. OpenClaw: Host exec environment sanitization misses package, registry, Docker, compiler, and TLS override variables
    High · 6.5 CVE-2026-41369 < 2026.3.31 2026.3.31
  69. OpenClaw: Incomplete scope-clearing fix allows operator.admin escalation via trusted-proxy auth mode
    High CVE-2026-41404 < 2026.3.31 2026.3.31
  70. OpenClaw: Agentic Consent Bypass — LLM Agent Can Silently Disable Exec Approval via `config.patch`
    High CVE-2026-41349 < 2026.3.28 2026.3.28
  71. OpenClaw: Incomplete host-env-security-policy allows untrusted model to substitute compiler binaries via env overrides
    High · 6.1 CVE-2026-41373 < 2026.3.31 2026.3.31
  72. OpenClaw: Device-Paired Node Skips Node Scope Gate → Host RCE.md
    High · 8.8 CVE-2026-41352 < 2026.3.31 2026.3.31
  73. OpenClaw: MS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion
    High · 7.5 CVE-2026-41405 < 2026.3.31 2026.3.31
  74. OpenClaw: Self-Whitelisting in appendLocalMediaParentRoots Allows Arbitrary File Read & Credential Exfiltration
    High CVE-2026-41366 < 2026.3.31 2026.3.31
  75. OpenClaw: OpenShell Mirror Sync — Sandbox Escape via Unrestricted File Sync + Symlink Traversal
    High · 9.6 CVE-2026-41397 < 2026.3.31 2026.3.31
  76. OpenClaw: Workspace `.env` can override the bundled plugin trust root
    High · 7.8 CVE-2026-41396 < 2026.3.31 2026.3.31
  77. OpenClaw: SSH sandbox tar upload follows symlinks, enabling arbitrary file write on remote host
    High · 8.1 CVE-2026-41364 < 2026.3.31 2026.3.31
  78. OpenClaw: Workspace `.env` can override the bundled hooks root and load attacker hook code
    High · 7.8 CVE-2026-41336 < 2026.3.31 2026.3.31
  79. OpenClaw: Heartbeat context inheritance bypasses sandbox via senderIsOwner escalation
    Critical CVE-2026-41329 < 2026.3.31 2026.3.31
  80. OpenClaw: PIP_INDEX_URL and UV_INDEX_URL bypass host exec env sanitization and redirect Python package-index traffic
    High · 5.3 CVE-2026-41391 < 2026.3.31 2026.3.31
  81. OpenClaw has a CWD `.env` environment variable injection which bypasses host-env policy and allows config takeover
    Critical · 9.6 CVE-2026-41294 < 2026.3.28 2026.3.28
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